<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="refresh" content="3;url=http://localhost:63344/JSDemo/chapter01/JS02.html">
    <title>01页面自动刷新</title>

    <script src="../lib/js/jquery-3.2.1.min.js"></script>
    <script>
        $(function () {
            $('#span').text(Date.now());
        });
    </script>
</head>
<body>
    <span id="span"></span>
</body>
</html>